Mikhail Bulgakov Email & Phone Number

London Area, United Kingdom

Full Development OwnershipBackend Development: - Led end-to-end architecture, design, and development of backend services with Go and PostgreSQL, ensuring high-performance, scalable systems.- Architected and deployed robust infrastructure and CI/CD pipelines on AWS Cloud, with a strong emphasis on security and reliability.- Developed and maintained custom Python scripts to meet specific business and automation needs, optimising operational workflows.Frontend & Mobile Development:- Spearheaded the development of mobile applications with React Native, guiding each project from initial concept to successful launch on the App Store and Google Play.- Built and maintained internal tools’ frontend with React, enhancing functionality and streamlining operations for internal stakeholders.

London Area, United Kingdom

Management:- Building and managing cross functional development team of 4 developers.- Stakeholders management and roadmap building.- Backlog management and prioritization.Development:- Built from scratch an environment in AWS Cloud using Terraform.- Built the automatic deployment process to AWS using GitHub Actions, Docker, Shell and Python scripts for Golang and React services.- Standardized Secrets Management inside the code bases and during the Deployment process.

Moscow, Russia

- Building and managing the workflow process (using Kanban Method and Agile practices), value stream, and delivery of the department with up to 45 people, including 4 cross-functional development teams (Golang + Frontend + QA) and 1 product team with business, system, and data analytics and with the product owner.- Built from scratch a cross-functional development team with 10 people, including Golang and Frontend Developers, and QA Engineers. Hired, mentored, and onboarded each team member, and immersed them in the work of the department.- Built from scratch and integrated the Quality Assurance process, which dramatically decreased the defect rate and incident frequency.- Designed a splitting of monolithic legacy Golang service into 13 microservices which improved the response time from 1.5 seconds and 100 RPS to 100 ms and up to 3,000 RPS.- Led a huge PostgreSQL database (3 TB) partial sharding with 10 shards which made it possible to increase count of daily moderations from 10.000 to more than 2.000.000 without performance leaks.- Solved traffic leaks by a transition from unsafe Blue/Green deployment of Vue.js frontend service to stable Rollouting with Ceph versioning and CDN caching.- Integrated a stress testing system for Golang microservices which made it possible to remove dozens of bottlenecks and increase the performance.

Moscow, Russia

Management:- Hiring and onboarding new employees to the DevOps team, building and managing workflow processes, managing incoming request streams, organizing and prioritizing backlogs, and managing tasks.Development:- Built the deployment process automation for iOS and Android mobile applications which decreased theweekly deployment time from 4-8 hours to minutes.

London, United Kingdom

- Built release cycle and deployment process for Mobile Web platform which decreased the amount of usedservers from 42 to 6 and reduced the deployment time from 30-60 minutes to around 20 seconds.- Standardized the iOS and Android applications deployment with up to 9 applications in both Google Play and App Store with translations to up to 42 languages including text and graphic assets.

Moscow, Russia

- Led a 2 times per day deployment readiness process including tasks tracking, monitoring, logs checking and communication between involved departments.- Led a testing the integration of Badoo to Social Network applications.

Moscow, Russia

- Tested the Web platform (backend and frontend) including regression, integration and end-to-end tests.- Programmed dozens Selenium autotests in PHP using PHPUnit, JavaScript and Webdriver.